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Renovated Office Building
For Sale
$1,100,000

6 Windsor St, Andover, MA 01810

Commercial Sale, Andover, MA

Property Size4,368 SF
Lot Size0.26 Acres
Price / SF$251.83
Days on Market114

Property Features for 6 Windsor St

General Information

Property type Commercial Sale
Property subtype Other
Zoning GB
Zoning description Legal Conforming
Bathrooms 5
Full bathrooms 5
Rooms Bathroom 3, Bathroom 4, Bathroom 1, Bathroom 2, Bathroom 5
Directions Located in Shawsheen Village, Andover
Standard status Active
APN M:00052 B:00044 L:00000,1838624
Size 4,368 SF
Lot size 0.26 Acres

Taxes and HOA fees

Tax Year 2025
Tax Annual Amount 26082

Amenities

private offices
meeting rooms
restroom on each floor
full kitchen
central HVAC
new windows
upgraded electrical and plumbing systems
2-inch water main
backup generator
ADA access ramp
ADA-compliant first-floor restroom

Building Details

Year built 1917
Listing Agency: Keller Williams Realty
Listed By: Susan Rochwarg
Added: Jun 29 Changed: Oct 16 Last Checked: Oct 20 at 9:06AM
MLS# 73543155

Copyright © 2026 MLS Property Information Network Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

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Investment Insights

Based on property information with market context.

This 4,368-square-foot brick office building dates to 1917 and has been substantially updated. The four-level layout includes multiple private offices and meeting rooms, a restroom on each floor, a full kitchen, central HVAC, a three-car garage, and on-site parking. Improvements include new windows, upgraded electrical and plumbing systems, a 2-inch water main, commercial fire suppression and sprinkler systems, a backup generator, an ADA access ramp, and an ADA-compliant first-floor restroom.

Zoned GB, the property is located in Andover’s Shawsheen Village District with access to Routes 28, 93, and 495. The layout is identified as suitable for professional office, medical, wellness, educational, and nonprofit uses, as well as potential multi- or single-family applications, subject to local approvals.

Key Highlights

  • 4,368 SF brick office building built in 1917
  • Four levels with private offices, meeting rooms, and a restroom on each floor
  • Central HVAC, full kitchen, three‑car garage, and on‑site parking

Financial Insights

Estimated NOI and Cap Rate

NOI / Yr
$80,574
Cap Rate
7.32%
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,611,480 $1.6M
Cap Rate 7%
$1,151,057 $1.2M
Cap Rate 9%
$895,267 $895.3K
Market Conditions
NOI Build-Up for 4,368 SF
Gross rent
$146.8K $33.60/SF
− Vacancy
−$12.5K −$2.86/SF
EGI
$134.3K $30.74/SF
− OpEx
−$53.7K −$12.30/SF
NOI
$80.6K $18.45/SF
Area
Essex County, MA
Vacancy
8.50%
Lease Rate
$33.60 /SF/Yr
Expense Ratio
40.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates
Cap Rate 5%
$1,611,480
Cap Rate 7%
$1,151,057
Cap Rate 9%
$895,267

Alternative Uses

Best Use
Office B
$1.74M
$1.52M – $2.03M (±1% cap)
NOI $121,749 @ 7.0% cap · market cap 11.07%
Second Best
Healthcare Medical
$1.15M
$1.01M – $1.34M (±1% cap)
NOI $80,574 @ 7.0% cap · market cap 7.32%
Theoretical Best
Office A
$2.59M
$2.26M – $3.02M (±1% cap)
NOI $181,009 @ 7.0% cap · market cap 16.46%
Zoning and permitted uses should be independently verified with authorities. How Realmo checks its estimates

Property Analytics

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Current Use

Office buildings

Suggested Use

Top Pick HVAC Service Grocery & Convenience Store Barber Shop Electrical Service (Bike/Boat/Book/etc) Store Big Box & Wholesale Store

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

Yes
Sprinkler system
Yes
Highway access

Location Intelligence

Trade Area within ½ mile

499
Businesses Nearby

Demographics for 01810, MA

35,621
Population
13,803
Households
2.6
Avg Household Size
43
Median Age
75%
College-Educated
97%
High-School Grad
30.5 sq mi
ZIP Area
1,168
Density / Sq Mi
$167,591
Median Household Income
$86,838
Median Earnings
$2,046
Median Rent
$813,800
Median Home Value
Check the figures for this property Cap Rate, Value Estimation, Potential NOI and more
View Realmo Analytics

Market

Vacancy Rate% for Office in Northeast region

13.1% 2019
15.4% 2020
17.6% 2021
19.1% 2022
20.2% 2023
20.9% 2024
19.9% 2025

Frequently Asked Questions

What type of property is this?
Office building - Four-level office property with private work areas, meeting rooms, central HVAC, parking, and a three-car garage.
Where is this office building located?
The property is located at 6 Windsor St Andover, MA.
What is the asking price?
The asking price for this property is $1,100,000.
What are key features of this property?
This property features: 4,368 SF brick office building built in 1917; Four levels with private offices, meeting rooms, and a restroom on each floor; Central HVAC, full kitchen, three‑car garage, and on‑site parking
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